Sash lock for bus or car window construction



Oct. 22, 1946. J. scHUNK 2,409,711

SASH LOCK FOR BUS OR CAR WINDOW ACONS'LRUC'IOI Y Filed Jun@ 23', 1944 'NAVI' Ilh llllllll'lll lllll A Patented Cet. 22, 1946 SASH LOCK FOR BUS R CAR WINDOW CONSTRUCTION Joseph Schunk, Union, N. J., assgnor to The National Lock Washer Company, Newark, N. J., a corporation of New Jersey Application .I une 23, 1944, Serial No. 541,813

3 Claims. 1

The present invention relates to a sash lock for bus or car window construction, and has for an object to provide a bolt actuating sash lock assembly which may be conveniently incorporated in the bottom rail of a window sash, with the cooperative parts of the lock secured to the bottom rail entirely at one side of the sash lock bolt, as distinguished from prior rtypes of sash locks, wherein the attaching screws for the sash lock assembly extended through the bolt, necessitating the punching of clearance slots therein.

A further object is to provide a sash lock case of substantially reduced thickness having a continuously flat face in spaced parallel relation to the flat surface of the bottom rail, its shape and construction eliminating the necessity for the usual projecting bulge offset heretofore provided in the case for containing the operating lever. The iiat face greatly facilitates cleaning, and has the further advantage of increasing the sill surface and minimizing theposibility of a person catching his hand or ngers between the sill and the sash lock case when the sash is lowered.

A further qbject is to provide an improved sash lock assembly wherein the sash lock lever, of relatively wide flat form, is pivotally arranged in parallel relation in the space between the inner side of the iiat sash lock case and the flat side .surface oi the bottom rail, so that regardless of its position eiectual support for the lock lever is obtained.

With the above and other objects in view, an embodiment of the invention is shown in the accompanying drawing, and this embodiment will be hereinafter more fully described with reference thereto, and the invention will be finally pointed out in the claims.

In Athe drawing:

Fig. 1 is a fragmentary view, showing the inner side of one lower corner of a window'sash in which is incorporated the sash lock assembly, according to the illustrated exemplary embodiment of the invention.

Fig. 2 is a horizontal sectional view, taken along the line 2--2 of Fig. 1.

Fig. 3 is a longitudinal vertical sectional view, taken along the line 3--3 of Fig. 2.

Fig. 4 is a transverse vertical sectional view, taken along the line 4-4 of Fig. 1.

Fig. 5 is a vertical transverse sectional view of the bottom rail, taken through the sash lock mounting portion thereof, the sash lock parts being removed.

Fig. 6 is a detail plan view of the sash lock Abou.

Fig. '7 is a side elevation thereof.

Fig. 8 is a side elevation of the sash lock insert or frame member.

Fig. 9 is a transverse vertical sectional view thereof, taken along the line 9-9 of Fig. 8.

Fig. 10 is a detail side elevation of the sash lock case.

Fig. 11 is a transverse vertical sectional view thereof, taken along the line Il-Il of Fig. 10.

Fig. 12 is a side elevation of the sash lock lever.

Fig. 13 is an edge View thereof.

Similar reference characters indicate corresponding parts throughout the several iigures of the drawing.

Referring to the drawing, the window sash, in which the sash lock assembly of the invention is incorporated, comprises generally a sash glass I0, a top rail (not shown), a bottom rail, and a pair of vertical side straps connecting the top and bottom rail. Only one end of the bottom rail and one of the side straps is illustrated, it being pointed out that the other end of the window sash is of identical construction, an identical sash lock being carried thereby in reversed relation to the sash lock illustrated. The side straps are adapted to have vertical sliding movement in vertical sash. guide post pieces at each side of the window opening, the sash lock bolts in each end of the bottom rail engaging rack strips provided in the post pieces.

The bottom sash rail comprises a pair of spaced side strips II-I l, between which is secured by welding or the like a sash glass receiving channel strip l2 having its upper edges flush with the upper edges of the strips Il. A second channel strip I3 is secured between the side strips Il intermediate their lower edges and the base of the channel strip I2, the space between the channel strips I2 and I3 providing a longitudinal passage through the bottom rail in which the sash lock bolt is engaged, as will presently more fully appear. At the lower edges of the side strips Il there are provided inwardly projecting flanges I4, engaged with the longitudinal side grooves I5 of the rubber weather strip I6 inserted in the lon.

' gitudinal pocket provided below the channel strip VI3. Instead of forming the bottom rail from the recessed end being formed by extending the ends i of the side strips I I beyond the ends of the channel strips I2 and I3 and the anges I4.

The side strap comprises a channel strip I8 adapted to receive the vertical edge of the glass I and the glazing strip I9 enclosing it, its vertical side walls being bent outwardly and rearwardly at their forward edges to provide anges 2li-2G to engage the forward vertical sides of the facing strip 2i engaged about the channel strip. The facing strip is of U-shape cross-section and is formed of suitable sealing material, such as felt, being cemented or otherwise suitably secured about the channel strip. The lower end portions of the flanges '2U are compressed, as at 22, and are engageable within the end recess I'I of the bottom rail, with the end of the rubber weather strip I6 of the bottom rail extended into engagement with the vertical bottom wall of the channel strip I8, the side strap having secured to it an inwardly projecting lug member 23, engaged in the end Yof the longitudinal passage of the bottom rail and secured 'to the rail by a screw 24. This lug member is of inverted U- shape in cross-section at its projecting portion engaged within the vbottom rail, so 'that it .engages over the top and sides of the sash lock bolt, while its portion 25 within the channel strip I S is of rectangular tubular form. The upper and lower walls Vof the tubular portion 25 'are provided with lug extensions Zit-26, engaged through a rectangular opening 21 in the vertical base of the wall of the channel strip Vand bent above and below the slot into contact with the outer surface of the base wall where they are 'rigidly secured thereto by welding or .the like. 'In axial line with the opening 21 land the passage through the tubular portion 25 of the lug member the facing strip '2i is provided with a Vrectangular passage 28, the outer end of the sash lock bolt :being slidably engaged in these passages and normally projected therefrom into engagement with 'the rack strip of the lsash guide post piece with which the side strap of the window sash assembly is normally engaged.

At its sash lock 'locating point the bottom rail is .provided at its inner side with Va pivot bearing hole 29, and anarcuateslot 30, concentric to the ain'sof the bearing hole and directly beneath it, the bearing 'hole being relatively Knear the upper edge of the rail and the arcuate slot being at a point opening into the bolt-receiving passage of the rail for Vreceiving 'the 'bolt actuating lug r'of the sash lock lever, as will presently more fully appear. The rail is 'also provided as its inner side with three holes 3l suitably located to receive the attachment'stu'ds and-screws of the sash'lock assembly, as will presently more fully appear.

The sash lock rassembly comprises an insert or frame member 32 in the form -of an'elongated -rectangular strip engageable within the longiltudinal passage of the bottom Vrail in contact with the inner surface of the .innerside strip 'I2 thereof, being of suitable 'width to t between the under surface of the -channel'strip :lf2 'and "flanged internally threaded bushings v35. 'These bushings 'are iiush with the'in'ner surface 'of the insert member and Aproject from the `outer *surface -to engage within 'the 4holes 3| of the `bot- "'lever,"as will presently more fully appear.

tom rail, where they are engaged by the attaching screws 36 of the sash lock case 37. At its rearward end the insert member is bent inwardly at a right angle to provide a stop and guide 38 for the extension rod of the sash lock bolt, a bearing passage 39 being provided therein for receiving the rod.

A stepped thrust pad member t0 is secured to the inner side of the insert member, by welding or the like, and projects downwardly there- 'from to seat within the groove of the channel strip I3, the angular step 4I thereof engaging over the corner of the inner ange of the channel strip I3. This thrust pad is adapted to be contacted by the bolt when the end of the bolt is supported on the sash rack and the weight of the raised window is imposed thereon.

The sash bolt l2 is in the form of an elongated bar of rectangular cross-section, provided at its outer end with a rack engaging beveled nose 43 Aand near rits rearward end and at its upper side Iwith a rectangular `notch 'dll for receiving the actuating lug of the sash nlock lever, as will presently more fully appear. An extension rod 45 is 'provided upon the inner end of the plunger and -has Aengaged thereon a U-shape `straddler or pressure member '43, an 'aperture "lll being 'provided in the intermediate portion of said member for sliding engagement upon the rod, and the sides of the member embracing the end of the plunger. The straddler member is normally Apressed forwardly toward 'the end of the plunger by means ofthe plunger spring '48 dis- ;posed about the rod vI5 between the straddler member and a washer '139 slidably mounted upon `the vend oi the rod and retained thereon by means of an enlargement i 'formed upon the 'end of the rod. It `should lbe noted that the `enlargement 5B serves 'to retain the washer, spring, and straddler member in place upon the ,plunger when these parts are in disassembled 'relation'as aunit, 'as shown in Figs. 6 and 7. In the assembled relation in 'the'sash rail the rod d'5 is 'engaged through the passage 39 of ya stop guide '38. 'In the assembled relation of the parts 'the washer li abuts the stop vguide 38 compressing the .spring 48, the stop guide r'acting as a fixed part against which the spring reacts.

The'sashlock'case 37, which has Va continuously 'flat outer Vface parallel to the inner .side of the bottom rail, is .provided with an inwardly bent rim flange 5i :extending along its horizontal lower edge and upwardlyl along its inwardly curved `end edges, 'the upper side .of 'the case "being 'open to provide a slot opening for the bolt 4Vactuating lever 'and having a horizontal lip 52 extending outwardly therefrom 'at a right angle to provide a nger grip for ccoperation with the The lowerwall 'of the rim flange 5I has a pair of supporting lugs "53 lanced therefrom and 'bent upwardly at leach side of the central attaching screw receiving hole 5e, soas *to'provide a `bracing lstructure 'at -the central area of the Vcase to withstand the tightening force ofthe central screw.'36. A pivot stud 551s riveted tov/the inner side of the case and is engagedin 'the'pivot'holeilg Yof the 'bottom vrail to provide a 'pivot lm'ounting for the the bolt through the arcuate slot 30 of the rail and the cut out 33 of the insert member 32.

The straddler member 46 is pressed back in the assembled relation, as shown in Figs. 1 to 4, so that its forward edges are substantially in line with or slightly forward of the edge of the notchL 44, and normally presses against the lever lug 59, which in turn is pressed against the opposed side of the notch 44. In this Way the lock parts and the operating lever are at al1 times held against looseness and rattling under pressure of the spring 48, the straddler member being so arranged that it takes up all lost motion and compensates for wear and variations in the parts. This condition obtains even after considerable Vwear upon the parts and also under the continuous vibration to which the parts are subjected in the usual bus and car installations. The bolt is retracted through downward pressure upon the lip 5B of the lever causing the lug 59 to swing rearwardly in the slot 3D' and thus retract the bolt against the pressure of the spring.

The lever 56 is in the form of a relatively wide plate, its forward edge being extended in a wide curve from the forward edge of the lip 58 to the lug 59, so that in any position a substantial surface of the lever is eiectually supported in the narrow space between the opposed parallel surfaces of the bottom rail and the sash lock case.

It will be observed that the mounting structure of the sash lock assembly is arranged entirely upon the inner wall of the bottom rail and at the inner side of the sash lock bolt. Hence, it is unnecessary to punch slots in the bolt for receiving the threaded bushings and screws for the sash lock assembly, as heretofore required. The flat face of the sash lock case provides a relatively large clear space between the lip 52 and the window sill so that there is little possibility of catching a nger between the casing and the sill in the lowering of the window.

I have illustrated and described preferred and satisfactory embodiments of the invention, but it will be obvious that changes may be made therein, within the spirit and scope thereof, as defined in the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

l. In a sash lock window construction, a rail having inner and outer side walls and a longitudinally extending bolt passage, said inner wall of said rail havinga slot, a lock bolt disposed in said passage and projected from one end, a lock case member engaged upon the outer side of said inner Wall, attaching means securing said case to said inner wall terminating between said case and the inner side of said bolt, and an operating lever pivotally mounted in said case having an actuating lug extended through said slot into engagement with said bolt.

2. In a sash lock window construction, a rail having inner and outer side walls and a longitudinally extending bolt passage, said inner wall of said rail having a slot and a plurality of screw receiving holes, a lock bolt disposed in said passageand projected from one end, a lock case member engaged upon the outer side of said inner Wall, attaching screws connected between said inner wall and said case extending through said screw receiving holes and terminating between said case and the inner side of said bolt, and an operating lever pivotally mounted in said case having an actuating lug extended through said slot into engagement with said bolt.

3. In a sash lock window construction, a rail having inner and outer side walls and a longitudinally extending bolt passage, said inner wall of said rail having a slot and a plurality of screw receiving holes opening to said passage, a lock bolt disposed in said passage and projected from one end, an insert frame member engaged upon the inner side of said inner wall, a lock case member engaged upon the outer side of said inner wall, attaching screws connected between said insert member and said case extending through said screw receiving holes and terminating between said case and the inner side of said bolt, and an operating lever pivotally mounted in said case having an actuating lug extended through said slot into engagement with said bolt.

JOSEPH SCHUNK, 

